00366nam a2200121Ia 4500008004100000041001200041082001100053100001700064245011500081260003300196300000800229650000700237221030s9999    xx            000 0 und d  aEnglish  a105.23  aD. J. Bolton 0aElectrical Engineering Economics Vol. I - A Study of the Economic Use & Supply of Electricitycby D. J. Bolton  bChapman & HallaLondonc1950  a291  aEE